Board-machine.



PATENTED MAY 5, 1903.

0.] E. PRYB BOARD MACHINE.- APPLIGATION FILED JAN. 12, 1903.

2 SHEETS-SHEIT 1- H0 IODEL.

Attorney No, 727,538. PATENTED MAY 5, 1903. c. B. FRYE.

BOARD'MAGHINE.

APPLIOATION FILED JAN. 12, 1903.

- 2 SHEETS-SHEET 2.

H0 MODEL.

Witnesses:

m: mums vz'rzns co. movmumm WASHANOTON, a. c.

IJ'Nitnn STATES:

Patented May 5, 1903 -PATE T OFFICE.

CYRUS E. FRYE, OF INDIANAPOLIS, INDIANA, ASSIGNOR OF ONE-HALF TO HERMANL. KUTTER, OF HAMILTON, OHIO.

BOARD-MACHINE.

SPECIFICATION forming part of Letters Patent N 0. 727,538, dated May 5,1903.

Application filed January 12,1903. Serial No. 138,621. (No mcdeli To aZZwhom it nuty concern.-

Be it known that I, CYRUS E. FRYE, a citizen of the United States,residing at Indianapolis, Marion county, Indiana, have invented certainnew and useful Improvements in Board-Machines, of which the following isa specification.

This invention pertaining to board mae chines will be readily understoodfrom the fol- 1o lowing description, taken in connection with theaccompanying drawings, in which Figure 1 is a side elevation of aportion of my improved machine; Fig. 2, a side elevation of theremaining portion thereof, the two figures of drawings to be viewed asconjoining with Fig. 2 at the right of Fig. 1; and Fig. 3, adiagrammatic vertical longitudinal section of the entire machine upon areduced scale.

In the manufacture of board on cylindermachines it is found that thepress-rolls remove the marks of the cylinder-mold or of a wire very muchmore perfectly than they do the marks produced by a felt, theconsequence being that most paper-board-is much smoother upon one sidethan the other. When a considerable multiplicity of making-cylinders areemployed in the production of very thick board, the arrangement is veryoften or 0 generally such as to produce felt-marks upon both sides ofthe board, thus resulting in a product having neither side smooth. Wheremachines with a considerable number of making-cylinders have beenarranged to avoid 5 this and bring the plies together in such manner asto have either one or both of the surfaces free from felt-marks, thearrangement has been extremely complicated, troublesome, and expensivein construction, use, and

maintenance. By means of my invention I am enabled to employ anunlimited number of making-cylinders and to avoid the production of morethan one felt-mark surface upon the board, and this by means of a-verysimple 5 organization comparatively inexpensive in use and maintenance.

I illustrate my invention in connection with a machine provided withfive making-cylinders.

In the drawings, 1 indicates the first cylin der-vat; 2, themaking-cylinder therein; 3,

the couch-roll of the cylinder, all these parts being constructed andarranged as usual in cylinder-machines; 4, 5, 6, and 7, successivesimilar making-cylinders with their vats and couch-rolls; 8, asuction-box arranged in advance of the final cylinder 7; 9, 10, and 11,a series of'primary pairs of press-rolls arranged in advance of thesuction-box; 12, the first press; l3,a felt-stretcher considered as awhole disposed prior to the first cylinder; 14:, a felt felt, backoverthe couch-rolls, and to the feltstretcher, and thence through thecourse described; 15, extra supporting-rolls for the upper leaf of thefelt; 16,wringing-rolls engaging the felt before it reaches the firstcylinder; 17, felt-beater cooperating with the usual spray-pipes to washthe felt before it goes to the wringing-rolls; 18, the felt-guide roll;19, a head-roll for the wire, the same being disposed below the lowerleaf of the felt between the final cylinder and the suction-box; 20, awire which, starting at head-101119, passes forwardly under the lowerleaf of the felt and over the suction-box and with the felt between theprimary press-rolls, thence around 'the lower roll of the first press,and thence back to roll 19; 21, a stretch-roll for the wire; 22, aguide-roll for the wire, and 23 a felt beyond the first press forpicking up the board delivered by the first press and conveying it tofurther presses and the driers.

Cylinder 2 delivers its product up against the lower leaf of the felt,which carries it forward to a point where the product of the sec- 0 0ndcylinder 4 is delivered up against the first, and so on till the felthas passed the final cylinder-7, carrying with it thecombined product ofthe five cylinders. Uponreaching roll 19 the product is recei\'ed,betgween the 5 lower leaf of the felt and the upper leaf of the wire and iscarried overthe'suction-box, which extracts much of the water. Theproduct is thus carried between thefelt and the wire to and between thefirst press 12 and then delivered to the aprons 23. With such ICC) athick product as five cylinders are in tended to make it is not foundpracticable to subject the web at once to the action of the first press12, owing to the liability of crushing. Therefore before the web goes tothe first press it is subjected to the excessive pressings of theprimary press-rolls, each of which may successively exert a heavierpressure than its predecessor, thus fitting the web for the finalsqueeze of the first press. As regards each pair of primary press-rollsit should be noted that the two rolls of the pair should have their axesin a common plane perpendicular to that of the wire and felt passingbetween them.

It is to be noted that the product delivered by the first press has butone side subjected to felt-marking, notwithstanding five makingcylindersare employed, and that a single felt only is necessary. The wireemployed is a comparatively short one, and its original expense andmaintainance is less than that of the felts usually employed in thecomparatively complex organizations found necessary in bringing aboutone smooth side for thick board produced from as many as five or moremaking-cylinders. It Willfurthermore be observed that all of thecylinders are arranged in simple manner upon a common level and thatthere is an absence of the overhead work usually involved in machineshaving the capacity of this one.

If a bottom felt were employed instead of the bottom wire 20 of mysystem, the felt would absorb water squeezed out of the sheet and mightat the last pair of primary pressrolls impart part of its moisture tothe sheet. The Wire-cloth of my arrangement will not thus [retain thewater, and therefore a less number of primary press-rolls may be usedand a heavier sheet made without fear of crushing. Again, a thickersheet to the given weight may be made with this arrangement, because thesheet does not require so much pressing and calendering to removefeltmarks, this matter being very important with board-makers, sincethey are anxious to get as thick a sheet with given weight as possible.

I claim as my invention-- 1. In a board-machine, the combination,substantially as set forth, of a horizontal series ofcylinder-machines,a suction-box in advance thereof, primary press-rollsin advance of the suction-box, a first press beyond the primarypress-rolls, a felt engaging the upper roll of the first press andhaving its lower leaf lying between the primary press-rolls and over thesuction-box and between the cylinder and couch-roll of all thecylinder-machines and havingits upperleaf passing above saidcouch-rolls, a head-roll disposed below the felt between the suction-boxand the final cylinder-machine, and an endless wire engaging saidhead-roll and the lower roll of the first press and having its upperleaf passing along with the felt between the primary pressrolls and overthe suction-box.

2. In a board-machine, the combination, substantially as set forth, of ahorizontal series of cylinder-machines, primary press-rolls in advanceof the cylinder-machines, a first press beyond the primary press-rolls,a felt engaging the upper roll of the first press and having its lowerleaf lying between the primary press-rolls and between the cylinder andcouch-roll of all the cylinder-machines and having its upper leafpassing above said couch-rolls, a head-roll disposed below the feltbetween the first primary press-rolls and the final cylinder-machine,and an endless wire engaging said head-roll and the lower roll ofthe'first press and having its upper leaf passing along with the feltbetween the primary press-rolls.

CYRUS E. FRYE.

Witnesses:

A. M. BRATE, H, R. DILG.

